If it seems gross to eat hole, just get a shower beforehand and start from there.
I have a friend who feels getting his wang sucked on is disgusting. I dunno, but different strokes for different folks, I guess.
I think eating each other out is great. Bring on the fruits and whipped cream as well, or perhaps a lube massage. Helps mask any potentially offensive smells too. Oh, and toys. I love it when women are game with toys. I'm no holds barred with this stuff and expect the lady to be the same way.
Depending on the lady, it's alright to have raw, "unclean" sex. Brings out the primal urges. There are tribes where you don't bathe for a month before wedding night so that the sex is more intense. But one month's 29 days too unclean for me.